diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-09-30 03:31:56 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-30 21:16:05 -0700 |
| commit | 82efee1499a27c06f5afb11b07db384fdb3f7004 (patch) | |
| tree | c329e037ddf4e13cd824c131eab3bd3a2e67a0fc /include/linux/inetdevice.h | |
| parent | 828bac87bb074f3366621724fdfbe314f98ccc7e (diff) | |
| download | lwn-82efee1499a27c06f5afb11b07db384fdb3f7004.tar.gz lwn-82efee1499a27c06f5afb11b07db384fdb3f7004.zip | |
ipv4: introduce __ip_dev_find()
ip_dev_find(net, addr) finds a device given an IPv4 source address and
takes a reference on it.
Introduce __ip_dev_find(), taking a third argument, to optionally take
the device reference. Callers not asking the reference to be taken
should be in an rcu_read_lock() protected section.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/inetdevice.h')
| -rw-r--r-- | include/linux/inetdevice.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index 1ec09bb4a3ab..ccd5b07d678d 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -159,7 +159,12 @@ struct in_ifaddr { extern int register_inetaddr_notifier(struct notifier_block *nb); extern int unregister_inetaddr_notifier(struct notifier_block *nb); -extern struct net_device *ip_dev_find(struct net *net, __be32 addr); +extern struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref); +static inline struct net_device *ip_dev_find(struct net *net, __be32 addr) +{ + return __ip_dev_find(net, addr, true); +} + extern int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b); extern int devinet_ioctl(struct net *net, unsigned int cmd, void __user *); extern void devinet_init(void); |